If you’re just getting rid of a body you don’t need a new one. You don’t care about contamination in that case. You can get those barrels used for dirt cheap. If you know where a boat landing is then you may even be able to steal one from underneath a dock for free and without leaving any paper trail.
Is this the dude that coppied me in calc but didn’t realize that the professor very obviously handed out 2 different versions of the test? Like I repeatedly saw him staring at my answer sheet and thought “noone can be that stupid” because the two test versions were literally printed on different colors of paper and the professor told everyone they were different versions to prevent cheating. Then to my immense delight the professor called him out on it the next day by congratulating him on getting 100% on the wrong version of the test.